From: Scott Wood <scottwood@freescale.com>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: <linuxppc-dev@ozlabs.org>, <thuth@redhat.com>
Subject: Re: [PATCH 5/6] powerpc/kconfig: Move cpu options after platform options
Date: Mon, 12 Oct 2015 16:47:18 -0500 [thread overview]
Message-ID: <1444686438.5185.94.camel@freescale.com> (raw)
In-Reply-To: <1444338557-14988-5-git-send-email-mpe@ellerman.id.au>
On Fri, 2015-10-09 at 08:09 +1100, Michael Ellerman wrote:
> In general platforms are a more important configuration decision than
> cpus, so the platforms should come first.
>
> My basis for saying that is that our cpu selection options are generally
> just about tuning for a cpu, rather than enabling/disabling support for
> a cpu. On the other hand disabling a platform means you can't boot on
> those machines, and any associated cpu options should vanish.
Kconfig.cputype *is* about enabling/disabling support for a cpu. On 32-bit,
the first choice is between "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx",
"Freescale 85xx", "Freescale 8xx", "AMCC 40x", "AMCC 44x, 46x or 47x", or
"Freescale e200". Until that is set correctly, the platforms available for
selection will not be correct.
Likewise, on 64-bit one must choose book3s versus book3e, before going on to
the tuning selection you describe above.
-Scott
next prev parent reply other threads:[~2015-10-12 21:47 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-08 21:09 [PATCH 1/6] powerpc/kconfig: Move NR_IRQS into "Kernel Options" Michael Ellerman
2015-10-08 21:09 ` [PATCH 2/6] powerpc/kconfig: Move sysdev Kconfig later Michael Ellerman
2015-10-09 5:54 ` Thomas Huth
2015-10-08 21:09 ` [PATCH 3/6] powerpc/kconfig: Move bitness & endian options to the top Michael Ellerman
2015-10-08 21:09 ` [PATCH 4/6] powerpc/kconfig: Move SCOM_DEBUGFS into "Kernel Hacking" Michael Ellerman
2015-10-08 21:09 ` [PATCH 5/6] powerpc/kconfig: Move cpu options after platform options Michael Ellerman
2015-10-09 5:47 ` Thomas Huth
2015-10-12 21:47 ` Scott Wood [this message]
2015-10-13 0:11 ` Michael Ellerman
2015-10-08 21:09 ` [PATCH 6/6] powerpc/kconfig: Cell CPU options should depend on PPC_CELL Michael Ellerman
2015-10-09 5:48 ` Thomas Huth
2015-10-08 21:30 ` [PATCH 1/6] powerpc/kconfig: Move NR_IRQS into "Kernel Options" Arnd Bergmann
2015-10-12 10:00 ` Michael Ellerman
2015-10-12 10:30 ` Arnd Bergmann
2015-10-12 11:07 ` Michael Ellerman
2015-10-12 11:50 ` Arnd Bergmann
2015-10-13 0:28 ` Michael Ellerman
2015-10-13 12:07 ` Arnd Bergmann
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